Dataverse contains data and code for: 

Connor T. Jerzak, Brian Libgober. The Impact of a Transportation Intervention on Electoral Politics: Evidence from E-ZPass. _Research in Transportation Economics_, 80: 1-14, 2020. DOI: https://doi.org/10.1016/j.retrec.2019.100809

There are two main datasets in the repository: `EZPassData_clean.csv` and `EZPassData_clean_with_campaign_finance.csv`. 

Key variables in `EZPassData_clean.csv` are the following. `EZPlaza_TravelDistOptimizedDist_Total_Leng` contains the minimum travel-time distance to the nearest EZ-Pass Plaza. `minNetworkOptimizedDistance_Distance_nonEZ_hwy` contains the minimum travel-time distance to the nearest non-EZ-Pass highway. `DemVoteChange2000_to_2004` contains information on change in precinct-level two-party Democratic presidential vote share. Other variables include `census_2000_AverageCommuteTime` and `census_2009_AverageCommuteTime`, containing Census-estimated average precinct-level commute times in 2000 and 2009, respectively.  

`EZPassData_clean_with_campaign_finance.csv` contains most of the same information as `EZPassData_clean.csv`, but the data has been further processed and merged in with data on stationary campaign contributors (contributions aggregated to the precinct level). `contribute_dem_pres_candidate_by_precinct_2000` and `contribute_dem_pres_candidate_by_precinct_2004` contain information on Democratic presidential campaign contributions from the stationary contributors in 2000 and 2004, respectively. See main paper for details. 

The script, `main_analysis.R`, produces the main paper results, calling other scripts found in the repository. 

Reach out to connor.jerzak@gmail.com for any questions. 

